lego tagged it as seasonal set so it should have a relatively shorter shelf life. Plus, there are no other outlets other than lego itself is selling it, so I imagine the market is not flooded. However, since its design is generic, even though it may be done later this year it can very much be brought back next year to celebrate 2020 chinese new year. I guess it all depends on how long the 80101, 80102 and the unreleased dragon boat set will stay as it appears to me the existence of DDG BH is undoubtedly for matching those regional sets. I think Lego will start to phase it out after chinese dragon boat festival this year which happens in June.
The set itself is unique and it doesn't look like we are getting more chinese themed BH anytime soon. I bought one for personal collection to pair with the 80101 and 80102 I acquired. May pick up a few more down the road